Does anyone know if this next EP will open up all waters?

I would be surprised if the you could swim in future worlds, since nothing in Sims 4 has been carried forward since. Base world had fishing, plants, collectibles, chess, kids play, BBQ, and toilets. That's just the Goth neighbourhood, with seasons they gained a vendor and with seasons a skating rink based on season.

None of there newer worlds/neighbourhoods have these items, even though they had plenty of time to add them.